/* Copyright (C) 2004 - 2006  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
namespace Db4objects.Db4o.Internal.Convert.Conversions
{
	/// <exclude></exclude>
	public class ClassIndexesToBTrees_5_5 : Db4objects.Db4o.Internal.Convert.Conversion
	{
		public const int VERSION = 5;

		public virtual void Convert(Db4objects.Db4o.Internal.LocalObjectContainer yapFile
			, int classIndexId, Db4objects.Db4o.Internal.Btree.BTree bTree)
		{
			Db4objects.Db4o.Internal.Transaction trans = yapFile.GetSystemTransaction();
			Db4objects.Db4o.Internal.Buffer reader = yapFile.ReadReaderByID(trans, classIndexId
				);
			if (reader == null)
			{
				return;
			}
			int entries = reader.ReadInt();
			for (int i = 0; i < entries; i++)
			{
				bTree.Add(trans, reader.ReadInt());
			}
		}

		public override void Convert(Db4objects.Db4o.Internal.Convert.ConversionStage.SystemUpStage
			 stage)
		{
			stage.File().StoredClasses();
		}
	}
}
